import time
# import multiprocessing
from multiprocessing import Process

def sing():
    while True:
        print("正在唱歌")
        time.sleep(1)


def dance():
    while True:
        print("正在跳舞")
        time.sleep(1)

if __name__ == '__main__':
    # pro = multiprocessing.Process(target=sing)
    pro = Process(target=sing)
    pro.start()
    dance()